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