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)(21,22,25,30,26,29,35,36)(23,27,31,34,28,24,32,33)(1,2)(3,4)(5,7,9,17,11,8,10,18)(6,12,15,13,16,20,14,19)(21,23)(22,27)(24,29)(25,31)(26,28)(30,34)(32,35)(33,36)(2,4)(5,8,11,7)(6,13,16,19)(9,17,10,18)(12,14,20,15)(21,24,26,27)(22,28,29,23)(25,34,35,33)(30,31,36,32)(5,9,11,10)(6,14,16,15)(7,17,8,18)(12,19,20,13)(22,29)(23,28)(30,36)(31,32)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.