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