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