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