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