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