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