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