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