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