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