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