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)(19,27,29,31)(20,23)(21,25)(22,26)(24,28,32,30)(2,7)(3,11)(4,5)(8,15)(10,16)(12,13)(18,23)(19,28)(20,21)(25,26)(27,31)(29,30) involution — undirected(1,3)(2,8)(4,13)(5,11)(6,12)(7,10)(9,15)(14,16)(17,19)(18,24)(20,28)(21,30)(22,29)(23,27)(25,31)(26,32) 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.