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