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