It would not make sense to draw map of the Null Labyrinth, as its various locales shift and move in unpredicatable ways.
The Null Labyrinth does not exist fully within the plane of Cahyali, and is anchored to the plane through ancient magic or technology. There are six fixed or 'stable' locations that do not change in the labyrinth, and all other locations are in flux. Permanent residents of the Labyrinth have studied and have an innate understanding of the rhythm of the changes of the labyrinth, and as such are able to travel through the labyrinth somewhat easily.
There a few known locales within the Null Labyrinth that explorers have charted. They include:
The areas of the Null Labyrinth endlessly shift and change, interconnected in strange arcane ways. If you are a GM, see the Running Null Labyrinth document for details.
There are a few cities that can be found in the Null Labyrinth, each of which has its own laws and customs: