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