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