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