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