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