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