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