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