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