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