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