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