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