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