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