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