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