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