I was abducted by aliens and, after a daring sprint to an escape pod, am looking at a  three-dimensional holographic display projected into the air in front of me. The hologram depicts what I believe to be the Milky Way Galaxy and the on-board AI has instructed me to touch my home-world's Solar System so that it may calculate it's route. What do I need to look for?
That is interesting!  Since the on-board AI is familiar enough to know the formal name of our star system as the Solar System, and fluent enough in English to describe its request, your task may be as simple as asking for Earth, or tapping on a home-world labelled Earth (presuming Earth is indeed your home-world).  Even selecting Solar System, Sol system, or the star Sol should be sufficient to arrive within 50 AU of your destination.  However, if the star systems are not sufficiently labeled, this could be more challenging.  

Sol is currently located far outside the galactic core, about midway out one of the Milky Way's spiral arms.  If those are labelled, you will be looking specifically for the Orion-Cygnus Arm.   Finding that, trace the arm out until you locate the Gould Belt, a ring of stars tilted from the ecliptic 16-20 degrees.  It may help to first identify the Radcliff Wave and the _Split_ linear structure, as the Gould Belt is within the space between these structures on the Orion arm.  Within the Gould Belt, search for a large supernova blast cavity in the interstellar medium (neutral hydrogen density 10x below average, about 1000 light years diameter).  This is known in English only as The Local Bubble, though your on-board AI may have other names for it, or none at all.  Landmarks within the bubble include: the Local Interstellar Cloud, the G-Cloud, the Ursa Major moving group  and the Hyades open cluster.  Of these, focus on the Local Interstellar Cloud, that is the Solar Neighborhood. It may be known as Local Fluff on some maps or even just The Fluff. Sol is near the border with the neighboring G-Cloud, toward the galactic core side.  If you're having difficulty, draw a line from Procyon to Altair, then draw another line through Alpha Centauri such that it is perpendicular to the first line.  Sol should be the nearest star to where these two lines meet.  Select that system and you should be well on your way home!  

Bear in mind these positions and landmarks are current, as of Earth local time, based on astronomical observation of incoming light.  They may not fully take into account relativistic effects, time dilation, temporal closed loops, superluminal transportation, or alien cartographic technologies.  The Solar System may be in a different position as recorded and reported by observers displaced in spacetime, or may be in a different relative position after a long interstellar journey, particularly a subliminal one.  Hopefully, your on-board AI is able to take these effects into account.   

Is there anything else I can help you with?