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