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