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