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