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