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