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