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