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)(7,16)(8,20)(9,12)(10,15)(11,17)(13,23)(14,25)(18,33)(19,31)(21,29)(22,30)(24,34)(26,32)(27,35)(28,36) involution — undirected(5,7,10,19)(6,11,15,29)(8,21,23,17)(9,24,25,18)(12,27,14,28)(13,31,20,16)(22,35,26,36)(30,33,32,34)(6,12)(9,25)(11,27)(13,32)(14,15)(16,33)(18,24)(20,30)(22,26)(28,29)(31,34)(35,36) 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.