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