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