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