One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,4)(5,6,10,16,11,17,26,14,12,18,25,34,9,15,8,23)(7,19,20,36,21,32,24,30,22,35,28,33,27,13,29,31)(5,7,8,24,9,27,25,20,12,22,26,29,11,21,10,28)(6,13,23,36,15,35,34,31,18,32,14,33,17,19,16,30)(2,4) involution — undirected(5,8,9,25,12,26,11,10)(6,14,15,16,18,23,17,34)(7,20,21,24,22,28,27,29)(13,30,19,33,32,31,35,36)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.