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