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)(11,13)(12,14)(15,16)(17,18,23,21,24,25,22,32)(19,26,29,27,30,31,28,20)(9,10)(11,15)(12,14)(13,16)(17,19,24,30)(18,20,25,27)(21,31,32,26)(22,29,23,28)(1,3,5,4)(2,6,8,7)(9,11,12,16)(10,13,14,15)(17,20)(18,19)(21,29)(22,31)(23,26)(24,27)(25,30)(28,32)(1,3,5,4)(2,7,8,6)(11,16)(13,15)(17,21,23,25,24,32,22,18)(19,27,29,31,30,20,28,26)(1,4,5,3)(2,6,8,7)(10,14)(13,15)(17,22,24,23)(18,21,25,32)(19,28,30,29)(20,26,27,31)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.