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