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