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