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)(19,26)(20,25)(21,30)(22,23)(24,27)(28,32)(29,31)(33,34)(35,39)(36,44)(37,38)(40,45)(41,43)(42,47)(46,48)(4,11)(8,14)(10,15)(12,16)(18,23)(20,30)(24,26)(28,31)(33,34)(35,41)(36,40)(37,38)(39,43)(42,47)(44,45)(46,48) involution — undirected(2,7)(3,9)(8,14)(10,15)(18,23)(19,27)(21,25)(28,31)(34,38)(36,45)(39,41)(42,48) involution — undirected(1,3)(2,5)(4,10)(6,9)(7,13)(8,12)(11,15)(14,16)(17,19,22,27)(18,24,23,26)(20,31,30,28)(21,29,25,32)(33,34)(35,41)(36,40)(37,38)(39,43)(42,47)(44,45)(46,48)(1,4)(2,8)(3,10)(5,12)(6,11)(7,14)(9,15)(13,16)(17,20)(18,25)(19,28)(21,23)(22,30)(24,29)(26,32)(27,31)(33,35)(34,39)(36,42)(37,43)(38,41)(40,46)(44,47)(45,48) involution — undirected(1,5)(2,3)(4,12)(6,13)(7,9)(8,10)(11,16)(14,15)(17,21,22,25)(18,20,23,30)(19,29,27,32)(24,31,26,28)(33,36)(34,40)(35,42)(37,45)(38,44)(39,46)(41,47)(43,48)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.