How do I cut granite floor tile properly without breaking it?

With something like this:

MK-170 Saw for Tile - MK Diamond at ConstructionComplete.com (http://www.constructioncomplete.com/TileSawsAllSizes/MKDiamondProductsMK170.html)

You can use a saw like that but have someone run a lot of water on the granite will you cut it, or it will chip badly or not cut at all