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