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