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