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