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