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