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