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