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