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