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