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