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