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