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