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