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