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