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