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