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