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