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