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)(13,16)(18,22,24,27)(23,29,30,32)(2,5)(6,8)(9,11,12,16)(10,13,14,15)(19,25)(23,30)(26,31)(29,32)(1,3,4,7)(2,6,5,8)(11,16)(13,15)(17,18)(19,23)(20,27)(21,24)(22,28)(25,30)(26,32)(29,31)(2,5)(6,8)(10,14)(13,15)(17,19,20,26,21,25,28,31)(18,23,27,32,24,30,22,29)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.