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