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