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