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