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