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