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