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