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