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