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