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)(8,12)(9,14)(10,13)(11,17,25,22)(16,26,31,35)(19,32,33,24)(20,28)(21,27)(23,29)(34,36)(5,7,9,22,10,18,23,17)(6,11,14,30,13,25,29,15)(8,19,20,16,21,33,34,31)(12,26,28,24,27,35,36,32)(2,4) involution — undirected(5,8,9,20,10,21,23,34)(6,12,14,28,13,27,29,36)(7,16,17,19,18,31,22,33)(11,24,15,26,25,32,30,35)(6,13)(11,25)(12,27)(14,29)(15,30)(24,32)(26,35)(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.