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