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