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