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