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