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