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