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