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