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