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