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