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