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