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