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