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