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