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