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