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