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