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