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