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