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