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