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