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