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