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