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