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