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