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