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