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