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