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