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