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