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