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