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