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)(21,22,26,29,25,28,24,30)(23,31,32,27,34,36,33,35)(5,7,9,8)(6,10,12,11)(13,14,16,17)(15,19,20,18)(21,23)(22,27)(24,32)(25,34)(26,33)(28,35)(29,31)(30,36)(5,7,9,8)(6,11,12,10)(13,15,16,20)(14,18,17,19)(22,28)(27,35)(29,30)(31,36)(2,4)(5,8,9,7)(6,11,12,10)(14,17)(18,19)(22,29)(23,32)(24,26)(28,30)(31,36)(33,34)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.