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