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