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