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