I can't point you to a walk-through for the graveyard, though I expect one or more of the Youtube Let's Plays goes through it. I can, however, give you a broad overview of the graveyard, in case this helps:
Unlike most of the other maps, which are more "maze-like" by design, the graveyard is a series of open areas, cordoned off by fences. The graveyard hosts six mausoleums, each of which is in its own separate area closed off by fences. If you're having trouble finding your way, your best option is to walk along the fences until you find the openings in them, while staying oriented toward whichever mausoleum you're trying to get to.
One other note: as with many locations in the game, there are a number of ways to get more information in-game about the graveyard, such as speaking to certain people, and reading certain books. This is a good way to gather more info if you are in need of beacons, or better descriptions of the area.
Hope that helps!