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