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