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