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