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