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