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