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