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