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