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