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