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