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