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