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