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