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