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