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