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