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