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