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