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