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