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