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