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