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