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