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