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