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