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