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)(11,15)(12,16)(13,14)(17,18,23,26)(19,27,24,32)(20,28,30,29)(21,25,22,31)(2,6)(7,8)(10,14)(11,12)(17,19,23,24)(18,20,26,30)(21,29,22,28)(25,32,31,27)(1,3,5,4)(2,7,6,8)(9,11,13,12)(10,15,14,16)(17,20)(18,24)(19,26)(21,27)(22,32)(23,30)(25,29)(28,31)(1,4,5,3)(2,8,6,7)(11,12)(15,16)(9,12,13,11)(10,16,14,15)(17,21,23,22)(18,25,26,31)(19,28,24,29)(20,27,30,32)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.