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