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