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