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