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