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