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