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