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