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