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