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