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