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