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