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