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