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