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