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