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