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