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