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