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)(17,18,22,23,21,26,20,25)(19,27,30,24,29,32,28,31)(2,5)(6,7)(10,14)(12,15)(13,16)(18,23)(20,22)(24,27)(25,26)(28,30)(31,32) involution — undirected(9,10,11,13)(12,16,15,14)(17,19,21,29)(18,24,26,31)(20,30,22,28)(23,27,25,32)(1,3,4,8)(2,6,5,7)(18,23)(20,22)(24,27)(25,26)(28,30)(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.