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