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