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