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