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