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