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)(27,30)(9,11)(10,12)(13,16)(14,15)(17,18)(19,26)(20,22)(21,29)(23,27)(24,28)(25,32)(30,31) involution — undirected(2,4)(9,12,14,13)(10,15,16,11)(17,19,20,25)(18,23,22,31)(21,30,28,27)(24,32,29,26)(2,4)(9,13,14,12)(10,15,16,11)(18,22)(23,31)(24,29)(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.