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