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