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