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