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