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