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)(19,24)(20,23)(21,31)(22,25)(26,28)(27,30)(29,32)(2,5)(6,8)(11,12)(14,15)(17,19,22,29)(18,24,25,32)(20,30,31,26)(21,28,23,27)(1,3,4,7)(2,6,5,8)(9,11,13,12)(10,14,16,15)(17,20)(18,21)(19,26)(22,31)(23,25)(24,27)(28,32)(29,30)(9,12,13,11)(10,15,16,14)(18,25)(19,27)(21,23)(24,26)(28,29)(30,32)(2,5)(6,8)(17,21,22,23)(18,20,25,31)(19,28,29,27)(24,30,32,26)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.