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