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)(18,23)(19,24)(25,30)(26,31)(2,7)(3,12)(9,13)(10,14)(17,18,22,23)(19,20,24,28)(21,25,29,30)(26,27,31,32)(33,34,38,39)(35,37,41,46)(36,40,45,47)(42,44,43,48)(2,7)(5,16)(8,11)(9,13)(21,29)(25,30)(26,31)(27,32)(34,39)(37,46)(40,47)(44,48) involution — undirected(1,3)(2,8)(4,14)(5,9)(6,12)(7,11)(10,15)(13,16)(17,19)(18,20)(21,26)(22,24)(23,28)(25,27)(29,31)(30,32)(33,35,38,41)(34,37,39,46)(36,43,45,42)(40,48,47,44)(1,4,6,15)(2,9,7,13)(3,10,12,14)(5,8,16,11)(17,20)(18,24)(19,23)(21,27)(22,28)(25,31)(26,30)(29,32)(33,36)(34,40)(35,42)(37,44)(38,45)(39,47)(41,43)(46,48)(1,5,6,16)(2,10,7,14)(3,9,12,13)(4,8,15,11)(17,21,22,29)(18,25,23,30)(19,26,24,31)(20,27,28,32)(33,37)(34,41)(35,39)(36,44)(38,46)(40,43)(42,47)(45,48)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.