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