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