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