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