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