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