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