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