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