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