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