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