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