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