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