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