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