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