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