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