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