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