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