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