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