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