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