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