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