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