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)(13,14)(15,17)(16,18)(19,20)(21,22,26,24)(23,29,30,27)(25,28,34,32)(31,36,33,35)(6,9)(10,11)(13,14,16,18)(15,17,20,19)(22,24)(23,30)(28,32)(31,33)(5,7,8,12)(6,10,9,11)(13,14)(15,19)(16,18)(17,20)(21,23,26,30)(22,27,24,29)(25,33,34,31)(28,36,32,35)(1,2)(3,4)(5,6)(7,10)(8,9)(11,12)(21,24,26,22)(23,29,30,27)(25,32,34,28)(31,36,33,35)(5,7)(6,10)(8,12)(9,11)(13,15)(14,17)(16,20)(18,19)(21,25,26,34)(22,28,24,32)(23,31,30,33)(27,35,29,36)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.