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