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