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