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