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