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