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