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