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)(17,18,24,27)(19,28,23,25)(20,22,21,26)(29,31,30,32)(34,40)(35,37)(42,47)(43,45)(1,2,5,8)(3,9,11,6)(4,7,12,14)(10,15,16,13)(17,19,24,23)(18,25,27,28)(20,30,21,29)(22,31,26,32)(33,34,39,40)(35,41,37,36)(38,42,46,47)(43,48,45,44)(4,12)(7,14)(10,16)(13,15)(17,20,24,21)(18,26,27,22)(19,29,23,30)(25,31,28,32)(33,35,39,37)(34,41,40,36)(38,45,46,43)(42,44,47,48)(1,2)(3,9)(4,7)(5,8)(6,11)(10,15)(12,14)(13,16)(17,21,24,20)(18,22,27,26)(19,30,23,29)(25,32,28,31)(33,36)(34,35)(37,40)(38,44)(39,41)(42,43)(45,47)(46,48)(1,3,5,11)(2,6,8,9)(4,10,12,16)(7,13,14,15)(17,22)(18,20)(19,31)(21,27)(23,32)(24,26)(25,30)(28,29)(33,37,39,35)(34,41,40,36)(38,45,46,43)(42,48,47,44)(1,4,5,12)(2,7,8,14)(3,10,11,16)(6,13,9,15)(17,23,24,19)(18,25,27,28)(20,30,21,29)(22,32,26,31)(33,38,39,46)(34,42,40,47)(35,43,37,45)(36,44,41,48)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.