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