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