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