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