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)(33,34,37,41)(35,38,43,39)(36,40,45,48)(42,46,44,47)(1,3)(2,7)(4,12)(5,8)(6,11)(9,13)(10,14)(15,16)(17,18,22,23)(19,24,26,21)(20,25,30,31)(27,32,28,29)(33,35)(34,38)(36,44)(37,43)(39,41)(40,47)(42,45)(46,48)(3,11)(4,13)(7,14)(8,16)(19,26)(21,24)(27,28)(29,32)(33,35,37,43)(34,39,41,38)(36,42,45,44)(40,47,48,46)(1,4)(2,8)(3,12)(5,7)(6,13)(9,11)(10,16)(14,15)(17,19)(18,24)(20,28)(21,23)(22,26)(25,29)(27,30)(31,32)(33,35)(34,38)(36,44)(37,43)(39,41)(40,47)(42,45)(46,48) involution — undirected(1,5)(2,9)(3,8)(4,14)(6,15)(7,13)(10,12)(11,16)(17,20)(18,25)(19,27)(21,29)(22,30)(23,31)(24,32)(26,28)(33,36)(34,40)(35,42)(37,45)(38,46)(39,47)(41,48)(43,44) involution — undirected(1,3)(2,7)(4,12)(5,8)(6,11)(9,13)(10,14)(15,16)(17,21,22,24)(18,19,23,26)(20,29,30,32)(25,27,31,28)(33,34)(35,38)(36,40)(37,41)(39,43)(42,46)(44,47)(45,48)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.