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