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