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