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