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