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