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