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