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