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