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