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