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