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