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