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