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