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