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