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