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