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