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