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