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