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