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