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