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