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