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