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