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