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