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