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