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