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