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