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