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