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