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