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