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