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