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