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