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)(21,22,26,29)(23,30,28,25)(24,32,33,31)(27,35,36,34)(5,6)(7,10)(8,12)(9,11)(13,16)(14,17)(15,18)(19,20)(21,23,25,22,26,28,30,29)(24,31,34,27,33,32,35,36)(5,7,8,13,9,14,15,19)(6,10,12,16,11,17,18,20)(21,24,30,35,26,33,25,34)(22,27,23,31,29,36,28,32)(1,2,3,4)(6,11)(10,17)(12,18)(16,20)(24,33)(27,36)(31,32)(34,35)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.