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