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