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