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