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