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