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