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