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