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