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