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