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