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