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