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