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