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