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