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