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