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