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