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