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