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