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