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