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)(13,14,16,17)(15,19,20,18)(21,22,27,31)(23,29,24,28)(25,26,30,36)(32,35,34,33)(13,14)(15,18)(16,17)(19,20)(21,23,27,24)(22,28,31,29)(25,32,30,34)(26,33,36,35)(6,9)(10,12)(14,17)(15,20)(21,24,27,23)(22,29,31,28)(25,32,30,34)(26,33,36,35)(1,2)(3,4)(5,6)(7,10)(8,9)(11,12)(13,15,16,20)(14,18,17,19)(21,25)(22,26)(23,32)(24,34)(27,30)(28,33)(29,35)(31,36)(5,7,8,11)(6,10,9,12)(13,14)(15,19)(16,17)(18,20)(21,26)(22,30)(23,33)(24,35)(25,31)(27,36)(28,34)(29,32)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.