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)(13,14,17,16)(15,19,20,18)(21,22)(23,26)(24,27)(25,29)(28,32)(30,33)(31,35)(34,36)(5,7,9,12)(6,10,8,11)(13,15,17,20)(14,18,16,19)(21,23,25,31)(22,26,29,35)(24,30,32,36)(27,33,28,34)(5,6,9,8)(7,10,12,11)(13,16,17,14)(15,18,20,19)(22,27)(24,32)(26,33)(28,29)(30,36)(34,35)(2,4)(5,8,9,6)(7,10,12,11)(15,20)(18,19)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.