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