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