One vertex per element, one color per generator, with an edge from x to x·s.
(2,5)(3,7)(9,10,13,15)(11,14,12,16)(17,18,22,25)(19,23,28,29)(20,21,30,24)(26,27,31,32)(1,2)(3,6)(4,5)(7,8)(9,11,13,12)(10,14,15,16)(17,19)(18,23)(20,27)(21,31)(22,28)(24,26)(25,29)(30,32)(9,12,13,11)(10,14,15,16)(17,20,18,24,22,30,25,21)(19,26,29,27,28,31,23,32)(1,3,4,7)(2,6,5,8)(2,5)(6,8)(17,21,25,30,22,24,18,20)(19,27,23,26,28,32,29,31)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.