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