In general terms their setups can be identical. With sulcatas you might make adjustments in your enclosure to protect them if they dig under objects (rocks, logs, etc...) that they don't calapse on the tortoise. Leopards do not dig so no need to make any adjustments in your enclosure to prevent that. Leopard tortoises are generally less agressive towards each other so you can keep multiple tortoises in an enclosure with less concern than a couple of male sulcatas. Also the sulcatas available in the pet industry are larger than most if not all leopards, so the size of your enclosure will vary between sulcata and leopard tortoises.
Richard Fife's leopard tortoise book is a great place to get more information on the care and husbandry specific to leopard torotises. It is available through many online stores.
I was all set to type out a big thing for you, but Shell already gave you the website that I was going to recommend and Neal already recommended the book I like and told you what I was gonna say.