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