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