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