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