One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,8)(5,6)(9,10)(11,14)(12,13)(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)(2,6)(3,9)(8,13)(11,15)(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)(8,13)(11,15)(14,16)(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)(3,10)(4,8)(5,6)(7,9)(11,16)(12,13)(14,15)(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)(1,3,5,9)(2,7,6,10)(4,11,12,15)(8,14,13,16)(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)(2,8,6,13)(3,11,9,15)(7,14,10,16)(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.