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