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