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