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