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)(15,17)(16,18)(19,20)(21,22)(23,30)(24,34)(25,29)(26,28)(27,33)(31,36)(32,35)(5,7,9,8)(6,10,11,12)(13,15,16,19)(14,17,18,20)(21,23,25,33)(22,27,29,30)(24,32,26,31)(28,35,34,36)(5,8,9,7)(6,10,11,12)(14,18)(17,20)(23,31)(24,26)(27,35)(28,34)(30,36)(32,33)(1,3,4,2)(6,11)(10,12)(21,24,25,26)(22,28,29,34)(23,32,33,31)(27,35,30,36)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.