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