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