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