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