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