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