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