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