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