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