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