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