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