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