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