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