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