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