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