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