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