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