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