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