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