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