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