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