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