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)(17,18,23,21)(19,20,26,24)(22,29,30,25)(27,31,32,28)(34,38)(36,43)(39,44)(42,47)(1,3,7,13)(2,8,10,16)(4,9,15,11)(5,6,12,14)(18,21)(19,26)(25,29)(27,32)(35,41)(39,44)(42,47)(46,48)(1,4,7,15)(2,6,10,14)(3,11,13,9)(5,16,12,8)(17,19,23,26)(18,24,21,20)(22,27,30,32)(25,31,29,28)(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)(17,20)(18,19)(21,26)(22,28)(23,24)(25,27)(29,32)(30,31) involution — undirected(1,5,7,12)(2,9,10,11)(3,6,13,14)(4,8,15,16)(17,21,23,18)(19,20,26,24)(22,29,30,25)(27,28,32,31)(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)(17,22,23,30)(18,25,21,29)(19,27,26,32)(20,28,24,31)(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.