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