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