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