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