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