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