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