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