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