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