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