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