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