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