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