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)(17,18,23,27)(19,24,22,26)(20,25,31,21)(28,30,29,32)(33,34,39,42)(35,37,44,41)(36,45,38,40)(43,47,46,48)(2,7)(3,11)(9,12)(10,16)(17,19,23,22)(18,24,27,26)(20,29,31,28)(21,30,25,32)(33,35)(34,37)(36,46)(38,43)(39,44)(40,47)(41,42)(45,48)(2,7)(3,11)(9,12)(10,16)(17,20,23,31)(18,25,27,21)(19,28,22,29)(24,30,26,32)(33,36,39,38)(34,40,42,45)(35,43,44,46)(37,48,41,47)(1,3,6,11)(2,8,7,13)(4,10,14,16)(5,9,15,12)(17,20)(18,21)(19,29)(22,28)(23,31)(24,30)(25,27)(26,32)(33,37,39,41)(34,35,42,44)(36,47,38,48)(40,46,45,43)(1,4,6,14)(2,9,7,12)(3,10,11,16)(5,8,15,13)(17,21)(18,20)(19,30)(22,32)(23,25)(24,29)(26,28)(27,31)(33,35)(34,41)(36,43)(37,42)(38,46)(39,44)(40,47)(45,48)(1,5,6,15)(2,10,7,16)(3,12,11,9)(4,13,14,8)(17,22,23,19)(18,26,27,24)(20,29,31,28)(21,30,25,32)(33,38,39,36)(34,40,42,45)(35,43,44,46)(37,47,41,48)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.