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