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