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)(19,26)(20,24)(21,25)(22,27)(23,30)(28,32)(29,31)(33,34,40,42)(35,43,37,41)(36,46,38,39)(44,45,47,48)(1,3,7,11)(2,8,9,16)(4,5,14,15)(6,12,13,10)(17,19)(18,23)(20,28)(21,29)(22,30)(24,31)(25,32)(26,27)(33,35,40,37)(34,41,42,43)(36,44,38,47)(39,45,46,48)(2,9)(3,11)(4,14)(10,12)(17,20,22,21)(18,24,27,25)(19,28,30,29)(23,31,26,32)(33,36,40,38)(34,39,42,46)(35,44,37,47)(41,45,43,48)(1,4)(2,6)(3,5)(7,14)(8,12)(9,13)(10,16)(11,15)(17,21,22,20)(18,25,27,24)(19,29,30,28)(23,32,26,31)(33,37,40,35)(34,41,42,43)(36,44,38,47)(39,48,46,45)(1,5)(2,10)(3,4)(6,16)(7,15)(8,13)(9,12)(11,14)(17,19)(18,26)(20,28)(21,29)(22,30)(23,27)(24,32)(25,31)(33,38,40,36)(34,39,42,46)(35,44,37,47)(41,48,43,45)(1,6)(2,4)(3,12)(5,8)(7,13)(9,14)(10,11)(15,16)(17,18)(19,23)(20,24)(21,25)(22,27)(26,30)(28,31)(29,32)(33,39)(34,38)(35,45)(36,42)(37,48)(40,46)(41,47)(43,44) involution — undirectedA 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.