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)(17,18,21,25,22,24,20,30)(19,26,27,31,29,32,28,23)(1,3,5,9,7,11,6,2)(4,8,13,10,15,16,14,12)(17,19,20,28,22,29,21,27)(18,23,25,26,24,31,30,32)(1,4)(2,8)(3,10)(5,13)(6,14)(7,15)(9,16)(11,12)(18,24)(19,27)(20,21)(23,26)(28,29)(31,32) 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.