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