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