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