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