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