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