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