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