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