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