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