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