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