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