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