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)(17,18,24,27)(19,28,22,25)(20,26,21,23)(29,31,30,32)(33,34)(35,45)(36,37)(38,42)(39,47)(40,44)(41,48)(43,46)(1,3,6,11)(2,7,8,14)(4,12,13,10)(5,9,15,16)(17,19,24,22)(18,25,27,28)(20,29,21,30)(23,31,26,32)(33,35)(34,41)(36,46)(37,47)(38,39)(40,48)(42,43)(44,45)(2,8)(3,11)(9,16)(10,12)(17,20,24,21)(18,26,27,23)(19,29,22,30)(25,32,28,31)(33,36,40,38)(34,42,44,37)(35,46,48,39)(41,43,45,47)(1,2)(3,7)(4,9)(5,10)(6,8)(11,14)(12,15)(13,16)(17,21,24,20)(18,23,27,26)(19,30,22,29)(25,31,28,32)(33,37,40,42)(34,36,44,38)(35,47,48,43)(39,41,46,45)(1,4,6,13)(2,9,8,16)(3,10,11,12)(5,14,15,7)(17,22,24,19)(18,25,27,28)(20,30,21,29)(23,31,26,32)(33,38,40,36)(34,42,44,37)(35,46,48,39)(41,47,45,43)(1,5)(2,10)(3,9)(4,7)(6,15)(8,12)(11,16)(13,14)(17,23)(18,20)(19,31)(21,27)(22,32)(24,26)(25,29)(28,30)(33,39,40,46)(34,43,44,47)(35,38,48,36)(37,41,42,45)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.