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