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