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