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