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