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