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