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