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