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