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