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