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)(23,29,33,36)(24,34,32,28)(25,30,26,35)(1,2,3,4)(5,7)(6,10)(8,14)(9,13)(11,17)(12,18)(15,20)(16,19)(21,23,25,24,27,33,26,32)(22,28,35,36,31,34,30,29)(6,11)(7,13)(12,15)(14,19)(21,24,25,33,27,32,26,23)(22,29,35,28,31,36,30,34)(7,13)(10,17)(14,19)(18,20)(21,25,27,26)(22,30,31,35)(23,32,33,24)(28,36,34,29)(5,8,9,16)(6,12,11,15)(7,14,13,19)(10,18,17,20)(22,31)(23,33)(24,32)(30,35)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.