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