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