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