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