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)(21,22,26,30)(23,24,28,27)(25,33,35,29)(31,34,36,32)(14,17)(18,20)(21,23,26,28)(22,27,30,24)(25,31,35,36)(29,34,33,32)(5,7,9,8)(6,10,12,11)(13,14,16,17)(15,18,19,20)(21,23)(22,27)(24,30)(25,31)(26,28)(29,34)(32,33)(35,36)(1,2)(3,4)(5,6)(7,10)(8,11)(9,12)(21,24,26,27)(22,28,30,23)(25,34,35,32)(29,31,33,36)(5,8,9,7)(6,11,12,10)(13,15,16,19)(14,18,17,20)(21,25,26,35)(22,29,30,33)(23,31,28,36)(24,32,27,34)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.