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