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)(21,22)(23,24)(25,29)(26,27)(28,32)(30,31)(33,34)(35,36)(1,2,4,3)(22,27)(23,28)(29,34)(30,35)(5,7,10,8)(6,11,13,14)(9,15,18,16)(12,19,17,20)(21,23,26,28)(22,24,27,32)(25,30,33,35)(29,31,34,36)(5,8,10,7)(6,11,13,14)(9,16,18,15)(12,19,17,20)(21,24)(22,28)(23,27)(25,31)(26,32)(29,35)(30,34)(33,36)(1,3,4,2)(5,6)(7,11)(8,14)(9,12)(10,13)(15,19)(16,20)(17,18)(5,9)(6,12)(7,15)(8,16)(10,18)(11,19)(13,17)(14,20)(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.