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