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