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