One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,5)(7,8)(9,10,14,15)(11,16,12,13)(17,18,22,27)(19,28,23,24)(20,30,21,25)(26,31,32,29)(2,5)(6,8)(9,11,13,10,14,12,16,15)(17,19,22,23)(18,24,27,28)(20,31,21,29)(25,32,30,26)(1,3,4,7)(2,6,5,8)(9,12,13,15,14,11,16,10)(17,20,22,21)(18,25,27,30)(19,29,23,31)(24,26,28,32)(10,15)(11,12)(17,21,22,20)(18,26,27,32)(19,29,23,31)(24,25,28,30)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.