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