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