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