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