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