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