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