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