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