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