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