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