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