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