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