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