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