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