One vertex per element, one color per generator, with an edge from x to x·s.
(4,12)(7,13)(11,16)(14,15)(17,18,23,38,24,28,22,27)(19,29,37,25,32,41,31,42)(20,33,21,26,35,46,34,43)(30,39,47,40,45,48,36,44)(1,2,5,8)(3,9,10,6)(4,13,12,7)(11,14,16,15)(17,19)(18,25)(20,30)(21,36)(22,37)(23,31)(24,32)(26,39)(27,41)(28,42)(29,38)(33,40)(34,47)(35,45)(43,48)(44,46)(1,3)(2,6)(4,11)(5,10)(7,14)(8,9)(12,16)(13,15)(17,20,22,34,24,35,23,21)(18,26,38,46,28,43,27,33)(19,30,37,47,32,45,31,36)(25,39,29,44,42,48,41,40)(3,10)(6,9)(11,16)(14,15)(17,21,23,35,24,34,22,20)(18,26,38,46,28,43,27,33)(19,30,37,47,32,45,31,36)(25,40,41,48,42,44,29,39)(1,4,5,12)(2,7,8,13)(3,11,10,16)(6,14,9,15)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.