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