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