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