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