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