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