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)(21,22,26,30)(23,29,25,27)(24,28,32,35)(31,36,33,34)(5,7,9,8)(6,10,11,12)(13,15)(14,17)(16,19)(18,20)(22,27)(23,25)(24,31)(28,35)(29,30)(32,33)(5,8,9,7)(6,10,11,12)(15,19)(17,20)(21,23,26,25)(22,27,30,29)(24,31,32,33)(28,34,35,36)(2,4)(21,24,26,32)(22,28,30,35)(23,31,25,33)(27,34,29,36)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.