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